Certified Professional Horticulturist (CPH) Practice Exam

Which of the following is an example of energy conservation within a landscape?

1. Plant large growing deciduous trees on the northern side of the houses to provide protection from the northerly winter winds

2. Plant large evergreen trees on the south and southwest sides of the house to provide shade from the winter sun

3. Plant tall coniferous trees on the eastern and southern sides of the house to shield the house from morning sun

4. Plant trees and shrubs to act as wind tunnels to channel southwesterly summer breezes through the outdoor living area and the home

The correct answer is: Plant trees and shrubs to act as wind tunnels to channel southwesterly summer breezes through the outdoor living area and the home

Choosing trees and shrubs to act as wind tunnels to channel southwesterly summer breezes through outdoor living areas and the home effectively exemplifies energy conservation within a landscape. This approach takes advantage of natural airflow, maximizing the cooling effects of breezes during warmer months. By strategically designing the landscape to facilitate breezes, the overall temperature around the home can be maintained at a more comfortable level, thereby reducing the reliance on mechanical cooling systems such as air conditioning. This not only leads to lower energy consumption but also enhances the comfort of outdoor spaces, creating a more pleasant environment throughout the summer. In contrast, the other options focus more on blocking elements such as wind or sunlight rather than harnessing natural breezes for cooling benefits. While those methods can contribute to energy conservation by insulating homes from harsh climate conditions, they do not utilize the potential of wind to enhance passive cooling, making this choice the most effective representation of energy conservation strategies in landscape management.